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regulation
Term | Definition |
---|---|
Response | is a reaction to the stimulus |
Stimulus | is a specific change in the environment that affects the nervous system |
Impulse | is a chemical or electoral message carried out by the nerve cells |
Neuron | a nerve cell |
Axon | is a single long fiber that carries impulses away from the cell body |
Central Nervous System | includes the brain and spinal cord |
Peripheral Nervous system | is made up of the nerves that lie outside the system |
regulation | is the life process by which cells and organisms respond to changes within and around them |
Nerve cell | the basic unit of the nervous system |
dendrites | are branched parts of a neuron that receive impulses from other neurons or sense organs. |
cell body or cyton | contains the nucleus and cytoplasm |
ganglia | cell bodies often are present in groups |
synapse | between the dendrites of one neuron and the axon of another is a space |
nerve | is a bundle of neurons or parts of neurons |
sensory neuron | carries impulses to the central nervous system |
motor neurons | carry impulses from the central nervous system to various body parts such as muscles or glands |
mixed nerves | contain both sensory and motor fibers |
reflex | is an example of involuntary behavior |
reflex arc | in a reflex response nerve impulses travel in a set pathway |
interneuron | connects the sensory neuron with the motor neuron |
cerebrum | controls movements the sense speech and abstract thought |
cerebllum | coordinates the actions of muscles and helps maintain balance |
medulla | controls involuntary actions such as breathing and heart beat |
glands | produce hormones which are directly secreted into the blood |
hormone | chemical messenger |
steps | sensory system, interneuron and motor system |